Optimal torque matching of a magnetic gear within a permanent magnet machine

The concept of a geared machine, where a magnetic gear and brushless permanent magnet machine are combined into a single machine, has been introduced and analysed in previous literature. However, the design methodology or process involved to provide an optimal design has not been developed. This paper proposes a strategy of matching the magnetic gear and machine to produce insight into how an optimal design can be achieved. The investigation of machine parameters through extensive finite element analyses is firstly employed to attain the influence of individual parameters and their impact upon an optimal solution. Finally an example design is further analysed to confirm their performance and justify the selection of optimum parameters.